charcoal tweed argyle and waistcoat. The charcoal tweed allows for casual, semi-formal and the North American formal the majority of us will attend. I got mine from Scottishkilts.net and their affiliate Tartanweb http://www.tartanweb.com/list/argyll__braemar.html (check out the bottom two).

They also have a jacket sale on right now and may have something that catches your eye http://www.tartanweb.com/list/jacket_sale.html